/Engine/Plugins/FX/Niagara/Source/NiagaraEditor/Public/Widgets/SNiagaraParameterPanel.h
class FNiagaraParameterPanelCommands : public [TCommands< FNiagaraParameterPanelCommands >](API\Runtime\Slate\Framework\Commands\TCommands)
TSharedPtr<FUI...
DeleteItem
Basic operations.